1350℃下SiCf/SiC单层Yb-Al-Si-O微晶玻璃环境屏障涂层的水氧腐蚀和热冲击行为

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2025-05-02 DOI:10.1016/j.surfcoat.2025.132228

Xinyu Meng , Chenxi Liang , Chun Guo , Shaobo Yang , Yujie Ma , Bo Chen , Juanli Deng , Shangwu Fan

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引用次数: 0

摘要

采用CaO-Yb2O3-Al2O3-SiO2 （CYbAS）微晶陶瓷对基体进行改性，Yb2O3-Al2O3-SiO2 （YbAS）微晶陶瓷对环境屏障涂层（EBC）进行改性，获得了高密度、高强的SiCf/SiC复合材料。通过评估单层YbAS涂层的抗水氧腐蚀和热冲击能力来评估其耐久性，以确定其作为先进EBC的潜力。结果表明，在1350℃50 vol% H2O-50 vol% O2环境下，YbAS涂层显著降低了热生长氧化物（TGO）的生长速率。此外，在1350°C的空气中进行的水冷热冲击测试显示，涂层内没有渗透性裂纹或TGO形成的证据。这些结果强调了YbAS涂层在高温腐蚀环境中的潜在应用。

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Water‑oxygen corrosion and thermal shock behavior of a single-layer Yb-Al-Si-O glass-ceramics environmental barrier coating on SiCf/SiC at 1350 °C

High-density and high-strength SiC_f/SiC composites were obtained utilizing CaO-Yb₂O₃-Al₂O₃-SiO₂ (CYbAS) glass-ceramics for matrix modification, alongside Yb₂O₃-Al₂O₃-SiO₂ (YbAS) glass-ceramics for environmental barrier coating (EBC). The durability of the single-layer YbAS coating was evaluated by assessing its resistance to water‑oxygen corrosion and thermal shock, in order to ascertain its potential as an advanced EBC. The results indicated that the YbAS coating significantly reduced the growth rate of thermally grown oxide (TGO) in a 50 vol% H₂O-50 vol% O₂ environment at 1350 °C. Additionally, a water-cooled thermal shock test conducted in air at 1350 °C revealed no evidence of penetrative cracks or TGO formation within the coating. These results underscore the potential application of YbAS coating in high-temperature corrosive environments.

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.